currently all sections and paragraphs are rendered identical, but the paragraphs have an "in xyz", which makes the graph very long in case of the common "each section has at least two paragraphs" scenario.
My preference would be: use a different shape for paragraphs. no additional text;
if that isn't possible: use thin shapes for paragraphs/fat for sections. no additional text;
if that isn't possible: use "xyz section" text instead of "in xyz"